Connector and Cable Specifications

This appendix contains these topics:

Connector Specifications

10/100/1000 Ports (Including PoE)

All 10/100/1000 ports use standard RJ-45 connectors and Ethernet pinouts.

Figure 1. 10/100/1000 Port Pinouts

SFP Module Connectors

Figure 2. Duplex LC Cable Connector



Figure 3. Simplex LC Cable Connector

Figure 4. Copper SFP Module LC Connector

Cables and Adapters

SFP Module Cables

For cabling specifications, refer to the following notes:

Each port must match the wave-length specifications on the other end of the cable, and the cable must not exceed the stipulated cable length. Copper 1000BASE-T SFP module transceivers use standard four twisted-pair, Category 5 cable at lengths up to 328 feet (100 meters).

Cable Pinouts

Figure 5. Four Twisted-Pair Straight-Through Cable Schematic

Figure 6. Four Twisted-Pair Semi-Cross Cable Schematic

Figure 7. Two Twisted-Pair Straight-Through Cable Schematic

Figure 8. Two Twisted-Pair Crossover Cable Schematic

Identifying a Crossover Cable

To identify a crossover cable, compare the two modular ends of the cable. Hold the cable ends side-by-side, with the tab at the back. The wire connected to the pin on the outside of the left plug should be a different color from the wire connected to the pin on the inside of the right plug.
Figure 9. Identifying a Crossover Cable

Console Port Adapter Pinouts

The RS-232 console port uses an 8-pin RJ-45 connector. Use an RJ-45-to-DB-9 adapter cable to connect the switch console port to a console PC. You need to provide a RJ-45-to-DB-25 female DTE adapter to connect the switch console port to a terminal.

Table 1 Console Port Signaling with a DB-9 Adapter

Switch Console 
Port (DTE)

RJ-45-to-DB-9
Terminal Adapter

Console
Device

Signal

DB-9 Pin

Signal

RTS

8

CTS

DTR

6

DSR

TxD

2

RxD

GND

5

GND

GND

5

GND

RxD

3

TxD

DSR

4

DTR

CTS

7

RTS

Table 2 Console Port Signaling with a DB-25 Adapter

Switch Console
Port (DTE)

RJ-45-to-DB-25
Terminal Adapter

Console
Device

Signal

DB-25 Pin

Signal

RTS

5

CTS

DTR

6

DSR

TxD

3

RxD

GND

7

GND

GND

7

GND

RxD

2

TxD

DSR

20

DTR

CTS

4

RTS